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痕量乙炔气体光热干涉多谐波信号联合检测技术

open access: yesGaoya dianqi
乙炔作为油浸式变压器故障诊断的主要特征气体,其在变压器油中的溶解浓度能够反映变压器的绝缘状态,光热光谱气体检测技术是可用于电气设备在线监测的新方法。文中在光热干涉原理的基础上,提出了基于2+4次谐波联合分析、2+4+6次谐波联合分析的多谐波痕量乙炔气体检测方法,对不同谐波检测方法的调制深度进行了优化,并基于空芯光纤构建的法布里—珀罗干涉仪进行实验验证。相比于单2次谐波分析法,多谐波在0.5 h内的联合信号波动幅度低于1%,线性拟合优度R2均高于0.999,且2 ...
潘兴亚   +4 more
doaj  

[Clinical characteristics and prognosis of primary immune thrombocytopenia complicated with diffuse alveolar hemorrhage]. [PDF]

open access: yesZhonghua Xue Ye Xue Za Zhi
An ZY   +8 more
europepmc   +1 more source

[Interpretation of the "Expert consensus on the management of neonatal parenteral nutrition (2025)"]. [PDF]

open access: yesZhongguo Dang Dai Er Ke Za Zhi
Lin XZ   +8 more
europepmc   +1 more source

[Guideline for the diagnosis and treatment of common neonatal diseases in primary healthcare institutions: neonatal infectious pneumonia (2025)]. [PDF]

open access: yesZhongguo Dang Dai Er Ke Za Zhi
Subspecialty Group of Neonatology   +3 more
europepmc   +1 more source

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